How to define a Count formula within a Subject
My data are organized such that an individual subject can have multiple lines of data, and each subject can have multiple dates/visits, and multiple lines of codes within each date/visit. However, the number of lines of data is different for each subject. I'm trying to count up the number of lines of data per subject, per date/visit, and lines of code within each date/visit. So, line 1=1, line 2=2...